Method of conditioning wound strand bodies



Feb. 13, 1945. n MARlNsKY Erm.

METHOD 0F CONDITIONING wUND .STRAND BODIES Filed Dec. 22, 1941 EJLULLIUSYN wmbwm mM# im www@ l .nanas ses. 13,1945

. ortica 7 METHOD OF CONDITIONING WOUND STRAND BODIES Davis Marinsky andLouis H. Morin, Bronx, N. Y..

Application December 22, 1941, Serial No. 423.934

9 Claims.

This invention relates to thread spools or bobbins such as used inconnection withthe shuttles of sewing machines or devices of this typeand kind supporting threads, lines, cords and the like. Moreparticularly, the invention relates to the method of treating wounddevices of this kind to maintain the strands of the spool llike bodyagainst displacement or against accidental or undesirable unwinding,while at the same time, adding lubricating properties to the strand. Thenovel features of the invention will be best understood from thefollowing description when taken together with the accompanying drawingin which certain embodiments of the invention are disclosed and in whichthe separate parts are designated by suitable reference characters ineach of the views, and in which:

Fig. l is a diagrammatic sectional view illustrating one mannerofcarrying the method into effect.

Fig. 2.is a diagrammatic sectional plan view of the' structure as seenin Fig. 1 and,

Fig. 3 is a perspective view of a bobbin made according to theinvention.

In the construction of spools, bobbins and like products of manufacture,it has been the common practice lto provide a core on which theparticular strand is wound, and further to provide on the ends of thecore or upon side surfaces of the wound strand body iianges forretaining the strands from displacement. In some instances, metal, paperor cardboard flanges have been used. In other instances, side faclngs'cf plastic or similar materials have been employed. Still further, andas set' forth in our prior Patents 2,200,720 and 2,200,721 both of May14, l1940, wax or paraffin film coatings have been applied to sidesurfaces of a wound strand body in form? ing film like retainingflangesl which wereremovedor broken down automatically in the unwindingoi' the strand.

It is the purpose of our present invention to provide a wound spool likebody. such forexample as a bobbin, with means maintaining the strands ofthe body against accidental displacement or undesirable unwindingwithout the necessity of using side anges or other mediums to retain thestrands against lateral displacement.

It is the furtherpurpose of our invention to provide a simple,economical and practical manner of producing products of the kind lunderconsideration, as well as. to provide on the resulting strand removedfrom the spool or bobbin, lubricating properties.

In the accompanying drawing we have shown for illustrative purposes onevadaptation of the invention. Theillustrations in Figs. 1 and 2 of thedrawing are entirely diagrammatic and serve only to indicate a method ofprocedure. In these figures, I0 represents a vat or tank containing,forexample. wax or parailin as indicated at Il. Anysuitable means, suchfor example as an electrie heater l2 will be employed for maintaining-the material I'I in a melted fluid state, the temperature beingpreferably controlled by a therl mostat or other control deviceindicated at l2.

In the construction shown, the vat I0 is arranged to move vertically ina support i4, the vat being preferably keyed to the support as indicatedat i5.y Projecting centrally from the bottom of the vat is a plunger I6having a tooth rack surface il adapted to be engaged by a tooth wheel I8arranged upon a suitable shaft. I0.

Means will be provided to intermittently rotate this shaft in bothdirections to lower and raiseV the vat as later described.v

A vertically arranged shaft 20 is suitably supported, as seen at.2i, andsecured to theupper end of the shaft is a cross beam 22, in the terminalends of which are supported other vertical shafts 23 and 24. On theupper end of the shaft 20 is also arranged a gear 25 meshing with adrive gear '26 actuated byany suitable means to intermittently rotatethe beam ,22 a half revolution, in order to successively bring theshafts 2l and centrally over the vat l0.

The upperl end of each shaft 23 and 24 has a friction disc 2l adapted tobebrought into mesh with a large friction drive wheel '28 rotatable bysuitable means at high speed. The wheel 2l is' disposed above and at oneside of the vat l0. Arranged opposite the vat I 0 'is a movable tray orpan 29. A plurality of spindles 30 are spaced l circumferentially on andprotrude below the lower surface of heads 3| arrangedupon the lower endsof the shafts 2 3 and 24.

At this time, it will be understood that any desired number of thespindles 20 may bc arranged circumferential-ly of each headdependingentirelyupon the diameter of the bobbins or spools 32 mounted thereonwith respect to the size of the heads Il.

In this connection, it will be also apparent vthat instead'of using asingle cross beam 22, that a spider having several arms may be employed,inV which latter event the intermittent rotation of the head and thenumber of vat stations and applicator and ejector stations willy becorrespondingly increased. 'I'he present illustration is sim. ply toshow one possible adaptation of the inventionV and infact individualworkpieces 32 may be produced. In our construction itis intended torevolve the entire head at high speeds, while maintaining the spindles3B relatively stationary. In other adaptations of the invention, meansmay be provided for individually rotating the spindles.

For purposes of this description, the vat station will be termed theiluidapplicator station and the other station will be defined as the=eiec tor and mounting station, the latter station being shown at theright of Fig. 1. The ends of the beam 22 have long bearings 33 landslidably mounted'on these bearings are ejector discs 3d normally held inraised position by a spring 35 seating upon a nut 36.

`Arranged on each head 3l and at opposite sides of the spindles 3o is apair of ejector pins 37. On these pins are arranged springs 3d whichnormally support the pins in raised position, and stop pins 39 areemployed to limit upward movement of the pins 31. The heads d@ of thement and unwinding, particularly the undesirable unwinding which takesplace with ordinary threads when used on high speed sewing machines.Further the application of the wax or parafln coating also gives to thethread or strand a lubricating property which is desirable pins 3l arenormally disposed adjacent the lower A 'surface of the disc 3e vso thatupon the depression of this disc all of the pins 3l will be moveddownwardly and all of the bobbins 32 .simultaneously ejected and droppedupon the tray or pan 29. A plunger di having a forked end it largeenough to span the ends ci the arm 122 including the friction discs 21,is adapted te be' lowered into engagement with the disc ad as indicatedin Fig. 1 and then further depressed in the ejection operation.

After the bobbins have been ejected onto the tray or pan 29, the pan ismoved out oi aline-- ment with the lower portion of the head tl and aseries of untreated bobbins are then applied to the spindles 30 by theoperation of a feed plunger d3 arranged in a suitable guide dit, thehead 3l being intermittently rotated to bring successive spindles intoalinement with the plunger 4,3. Any suitable means may be provided toac,- complish this result and in some instances intermittent rotation ofthe heads may be performed by hand.

The operations of ejecting the bobbins and then applying new bobbins onthe spindles are performed while the other companion head 3i maintainsall of the bobbins supported thereon in submerged position in the iiuidii of the vat l0. After the bobbins have been submerged a sufficientlength of time, the vat it is then partially lowered to maintain thebobbins 32 within the upper portion of the vat above the iiuid l@therein. While in this position the head 3l is rotated atvhigh speed sothat all surplus of the fluid will be removed from the bobbins throughthe action of centrifugal force. When this operation ha's beencompleted, the vat is loweredstill further to clear all of the bobbinssupported on the head Si and by this time the other head will have allof the `untreated bobbins appliedto its spindles and the beam is thenrotated to reverse the positions of the heads and the above cycle ofoperation is then again repeated.

- The bobbins picked upon the tray 29 may be delivered in any suitablemeans to a drying or cooling station for quickly setting the materialemployed, after which the bobbins may be packed in any desired mannerfor shipment.

It will be apparent that a bobbin or other wound strand body, processedin the manner dex i'lned, will have the strands thereof adhere to eachother 'to a slight degree, suiilcient only to retain the strands againstaccidental displacestandpoint it will be understood that 'the method t:

herein deiined consists primarily in the complete submersion of a woundstrand body in a suitable fluid, then in rotating the thread strand bodyat high speed to throw off all surplus of the material and then to fixthe fluid material upon the strands in producing lthe resulting product,

It will be apparent that the strand body produced according to themethod herein defined may be wound in any desired manner and many oithese bodies' have cross windings as int-,he bobbin illustrated. Thistype of winding maintains the strands against collapse or, displacement.With the present method of coating or impregnating the strands with thematerial which establishes a slight adhesion between contacting portionsof across wound strand, the body is further maintained in its woundcondition in the absence of retaining discs, whereas a light tensionpull on the strand will readily unwind the same from the body and yetthe strand is kept trom accidental unwinding.

Having fully described our invention, what we claim as new and desire tosecure by Letters Patent, is:

a strand of thread cross wound on a core for retaining the threadagainst inadvertent unwinding and for retaining the mass of wound threadon the core in. the absence of retaining discs, which comprisescompletely submerging said body in a fluid, retaining the body in theiluid for a predetermined period -to permit. penetration of said fluidto all windings of said body, then removing the body from the fluid andrevolving the body at high speed to dispense excess duid from the strandandY all uid intervening the strand windings by the action ofcentrifugal force, and then drying the body to harden the iiuid appliedto the strand thereof, producing in the resulting wound body slightadhesion of the contacting intersecting portions only of the strand formaintaining the strand against inadvertent displacement and unwinding.

2. yAmethod of treating a bobbin body including a strand of threadcrossvwound on a core for retaining the thread against inadvertentunwinding and forl retaining the mass of wound thread on the core in theabsence of retaining discs;

which comprises completely submerglng the ving of the strand withoutascenso adhesion between contacting portions only of adjacent strandwindings. s

3. A method of treating a bobbin body including a strand of thread crosswound on a core for retaining the thread against inadvertent unwindingand for retaining the mass of wound thread on the core in the absence ofretaining discs; which comprises the application of a fluid havingslight adhesive properties to all of the wind-` ings of the strand onsaid body, removing vall fluid intervening -cross windings of the strandby action of centrifugal force and setting said fluid i unwinding andfor retaining the wound thread mass on the core in the absence ofretaining discs; which' -comprises the step of arranging two groups ofbodies on movable mounting membe'rs in spaced relation to eachother,successiv e lyl moving said members to a submerging stationstrands for maintaining the strands against inadvertent displacement andunwinding. I

6. A method of treating bobbin bodies each including` a strand of threadcross wound on a core for retaining the thread against inadvertentunwinding and for retaining the wound thread ymass on the core in theabsence of retaining discs; which comprises the step of arranging twogroups. of bodies on movable lmounting members in spaced relation toeach other, successively,

moving said members to a submerging station and a dispensing andapplicator station, simultaneously submerging all of the-strand bodieson one member at the first station in a fluid, then removing said bodiesfrom the fluid and revolving'` said memberat high speed to dispensesur-v plus uid from said bodies by the' action of centrifugalforce,then-movingsaid member to the second station and the other member to thefirst station and simultaneously stripping the vprocessed bodies fromsaid first member, applying unprocessed'bodies thereto while the bodiesof the second member are processed at vthe first station, arrangingtheiiuid in avat and intermittently raising and lowering' said vat incon'- trolling the submersion of said bodies,fheating v the vat incontrolling the temperature of the and a dispensing and applicatorstation, simultaneously submerging all of the strand bodies on onemember at the first station in a fluid, thenf removing said bodies fromthe fluid and revolvingA said memberat high speed to dispense surplusfluid from said bodies by the action of 4centrifugal force, then movingsaid member to the second station and the other member to the firststation and simultaneously stripping th.,- processed bodies from saidfirst member, applying unprocessed bodies thereto while the bodies ofthe second member are processed at the first station, and then dryingthe thread bodies to harden the fluid applied to the strands thereof,producing in the resulting wound bodies slight ad'- hesion ofA thecontacting intersecting portions only of the strands for maintaining thestrands against inadvertent displacement and unwinding.

kone member at the first station in a nuid, thenremoving said bodiesfrom the fluid and revolving said member at high speed to dispensesurplus uid from said vbodies* by the action of centrifugal force, thenmoving said member to the' second station and the other member to the 4first station and simultaneously strippingthe l processed bodies fromsaid first member, applying unprocessed bodies thereto while the bodiesstation', arranging the fluid in a vat and intermittently raising andlowering said vat in con trolling the submersion of said bodies. andthendrying. the treated bodies to harden the fluid applied to the strandslthereof, producing in the resulting wound bodies slightadhesion of thecontacting intersecting' portions only of the 5. A method of treatingbobbin bodies each fluid therein, and then drying the treated bodies toharden the fluid applied to the strands thereof, producing in the'resulting wound bodies slight adhesion of the contacting intersectingportions only of the strands for maintaining the strands againstinadvertent displacement and unwinding.

7. The method of 'treating a wound strand body including a strand crosswound on a core for retaining the strandagainst inadvertent unwindingand lfor retaining the wound strand mass on the core in the absence ofretaining discs; which comprises mounting a strand body on a rotatablemember, moving a vat containing heated wax toward the body supported onsaid g member to completely submerge the lstrand thereof in the heatedwax, maintaining the strand body in the wax a sufficient time to allowthe wax to penetrate all of the strand windings of said body, thenmoving the vat away fromv said 4strand body to remove the body from thewax while maintaining the same within boundary Walls of the vat, thenrotating said member at high speed to vdispense excess wax therefrom bythe action of centrifugal force, and then drying the body thus treatedto hardenthe wax in producing on'the resulting wound body slightadhesion vof the contacting intersecting portions only of the strand formaintaining the strand against inadvertent displacement and unwinding.

8. A method of treating bobbin bodies each including a strand of' threadcross wound on a core for .retaining the threadvagainst inadvertentunwinding and for retaining the wound thread of the second member areprocessed at the first mass on the core inthe absence of retainingdiscs; which comprises arranging a plurality of said bodies on amountingmember, submerging all of said bodies in a fluid by movement of themember in the direction vof said fluid, retaining the bodies submergedinthe fluid for a predetermined period of time to permit penetration ofsaid fluid to all lwindings of all of said bodies, then moving saidmember away'from said fluid in removing the bodies from the. fluid andrevolving all of said bodies at high speed to remove excess fluid fromthe strand of each body and all nuid lintervening the strand windings ofsaid bodies by the action of centrifugal force. then removing the bodiesthus treated from said member, and then treating said bodies t0 set thefluid applied to the strands thereof to `produce be tween contactingportions of the windings of each body slight adhesion retaining thestrands of said bodies against accidental `displacement and unwinding.

9. The method of treating a wound strand body including a. strand crosswound on a core for retaining the strand against inadvertent unwindingand for retaining. the wound strand mass on the core inthe absence ofretaining discs; which comprises establishing two stations, namely aloading and unloading station and a submerging station, loading a'predetermined number of strand bodies on s. carrier at the loadingstation, then moving the carrier to the submerging station andsubmerging 'ali of the `4 assenso bodies on the carrier in heated wax atsaid submerging station, maintaining said bodies submerged in the waxsumciently to saturate all ot the windings of said bodies, then removingthe 5 bodies from the heated wax while maintaining 'said bodies at saidstation and above the heated '-wax, then rotating the carrier at highspeed to remove ali surplus wax from said bodies by the action ofcentrifugal force, then returning the 10 carrier to the rst namedstation and unloading i5 strand for maintaining the strand againstinadvertent displacement and unwinding.

' DAVIS INSKY.

LOUIS H. MORIN.

